[S390] Remove initial kernel stack backchain initialization.
Early init code clears the backchain of the initial kernel stack frame. This is not necessary since it is pre initialized with zeros. Plus it was broken on 64 bit since it cleared only four of eight bytes. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
parent
64253acbf1
commit
c58d92b233
|
@ -29,7 +29,6 @@ startup_continue:
|
|||
ahi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union+THREAD_SIZE
|
||||
st %r15,__LC_KERNEL_STACK # set end of kernel stack
|
||||
ahi %r15,-96
|
||||
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
|
||||
#
|
||||
# Save ipl parameters, clear bss memory, initialize storage key for kernel pages,
|
||||
# and create a kernel NSS if the SAVESYS= parm is defined
|
||||
|
|
|
@ -96,7 +96,6 @@ startup_continue:
|
|||
aghi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union + THREAD_SIZE
|
||||
stg %r15,__LC_KERNEL_STACK # set end of kernel stack
|
||||
aghi %r15,-160
|
||||
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
|
||||
#
|
||||
# Save ipl parameters, clear bss memory, initialize storage key for kernel pages,
|
||||
# and create a kernel NSS if the SAVESYS= parm is defined
|
||||
|
|
Loading…
Reference in a new issue